body system the breaks down food and absorbs nutrients. Includes: mouth, esophagus, stomach, small and large intestines.
the body's system of defense against disease.
The system that delivers oxygen and nutrients and removes carbon dioxide and wastes from the body by the blood. Includes the heart and blood vessels.
system responsible for taking in oxygen and releasing carbon dioxide using the lungs. Includes the trachea, bronchi, lungs and diaphram.
Supports and protects the body. Made up of bones.
Includes the muscle tissues, and gives support, structure, and movement throughout the body.
The system that detects sensations and controls body functions.
The system that removes wastes from the body.
The system that allows the species to reproduce (produce offspring).
Levels of Organization
Cells, tissues, organs, organ system and organism.